Package org.apache.openjpa.lib.util.collections

Interface OrderedMapIterator<K,V>

Type Parameters:

K - the type of the keys in the map

V - the type of the values in the map

All Superinterfaces:

java.util.Iterator<K>, MapIterator<K,V>, OrderedIterator<K>

All Known Implementing Classes:

AbstractLinkedMap.LinkMapIterator, AbstractSortedMapDecorator.SortedMapIterator, DualTreeBidiMap.BidiOrderedMapIterator, EmptyOrderedMapIterator, UnmodifiableOrderedMapIterator

public interface OrderedMapIterator<K,V>
extends MapIterator<K,V>, OrderedIterator<K>

Defines an iterator that operates over an ordered Map.

This iterator allows both forward and reverse iteration through the map.

Since:

3.0

Method Summary

Modifier and Type	Method	Description
boolean	hasPrevious()	Checks to see if there is a previous entry that can be iterated to.
K	previous()	Gets the previous key from the Map.

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface org.apache.openjpa.lib.util.collections.MapIterator

getKey, getValue, hasNext, next, remove, setValue

Method Detail

hasPrevious

boolean hasPrevious()

Checks to see if there is a previous entry that can be iterated to.

Specified by:

hasPrevious in interface OrderedIterator<K>

Returns:

true if the iterator has a previous element

previous

K previous()

Gets the previous key from the Map.

Specified by:

previous in interface OrderedIterator<K>

Returns:

the previous key in the iteration

Throws:

java.util.NoSuchElementException - if the iteration is finished